hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China

hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China System 1

hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China System 2

hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China System 3

hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 m.t.

Supply Capability:: 5000000 m.t./month

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Description:

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications.

Specifcation:

1.Mateials:SGCC,DX51D / DX52D /S250,280GD

2.Size:width:600-1250mm(900mm,1215mm,1250mm,1000mm the most common)

thickness:0.15-2.0mm

length:1000-6000mm,as your require

3.Zinc coating :60-180g( as required)

4.Coil id:508mm

5.Coil weight: 3-5MT(as required)

6. Surface:regular/mini/zero spangle, chromated, skin pass, dry etc.

Images:

hot-Dip Galvanized/ Aluzinc Steel in SGCC grade in China

We can ensure that stable quality standards are maintained, strictly meeting both market requirements and customers’ expectations. Our products enjoy an excellent reputation and have been exported to Europe, South-America, the Middle-East, Southeast-Asia, Africa and Russia etc.. We sincerely hope to establish good and long-term business relationship with your esteemed company.

Q:How are steel coils inspected for hardness using hardness testers?: To assess the strength and durability of steel coils, hardness testers are employed to examine their hardness. Hardness testers are specialized devices used to gauge a material's resistance to indentation or penetration. For steel coils, Rockwell or Brinell testers are commonly utilized. Both methods entail exerting a precise force onto the surface of the coil and measuring the depth of indentation or size of the impression made. In the case of Rockwell testing, a steel ball or diamond cone is pressed onto the coil's surface with a predetermined force. The depth of penetration is then measured and compared to a standardized scale in order to determine the hardness value. Different scales are employed based on the size and type of indenter in use. On the other hand, Brinell testing involves using a spherical indenter made of tungsten carbide or hardened steel. This indenter is pressed onto the coil's surface with a known force, and the resulting indentation is measured and compared to a standardized table to determine the hardness value. Both methods provide a quantitative measure of the steel coil's hardness, which serves as an indicator of its ability to resist deformation, wear, and cracking. The hardness test results are subsequently utilized to ensure that the steel meets specific quality standards or customer requirements. It is important to note that the inspection process may involve sampling, where representative sections of the steel coil are tested, or it may involve testing the entire coil, depending on the specific inspection requirements. Additionally, accurate and reliable results necessitate proper calibration and maintenance of the hardness testers.

Q:What are the different methods of tension leveling for steel coils?: There are several methods of tension leveling for steel coils, each with its own advantages and applications. 1. Roller leveling: This method involves passing the steel coil through a series of rollers under high tension. The rollers are strategically positioned to apply pressure on the coil, effectively stretching and elongating it. Roller leveling is commonly used for thinner gauge coils and is effective in removing coil set, crossbow, and edge wave defects. 2. Stretch leveling: In this method, the steel coil is subjected to a combination of tension and elongation. The coil is gripped by clamps at both ends and then stretched using hydraulic or mechanical devices. This process helps to remove residual stresses, flatten the coil, and improve shape control. Stretch leveling is particularly suitable for thicker gauge coils and can effectively eliminate wavy edges and center buckle. 3. Temper rolling: This method involves passing the steel coil through a series of temper rolls, which apply pressure on the surface of the coil. Temper rolling is primarily used to improve the surface finish of the steel and enhance its mechanical properties. It can also help to reduce coil set and improve flatness. 4. Skin pass rolling: In this method, the steel coil is passed through a series of rolls that apply a light pressure on the surface. Skin pass rolling is typically performed after the primary leveling process to further improve surface finish, enhance flatness, and reduce surface defects such as scratches or marks. 5. Stretcher leveling: This method involves clamping the steel coil at both ends and then applying tension to stretch it. The stretched coil is then held in this position for a period of time to allow for stress relief and shape correction. Stretcher leveling is commonly used for thicker gauge coils and can effectively remove coil set, crossbow, and center buckle. Each of these tension leveling methods offers unique advantages and is suitable for different types of steel coils and specific requirements. The choice of method depends on factors such as coil thickness, desired flatness, surface finish, and the specific defects that need to be corrected.

Q:How are steel coils used in the production of agricultural implements?: Steel coils are used in the production of agricultural implements as they are formed and shaped into various components such as blades, tines, or plowshares. These sturdy and durable steel components are then assembled into agricultural machinery like plows, cultivators, or harrows, which are essential for tasks like tilling soil, planting crops, and harvesting. The strength and resilience of steel make it an ideal material for agricultural implements, ensuring they can withstand the demanding conditions of farming and contribute to efficient and effective agricultural operations.

Q:What are the different types of steel surface finishes for coils?: There are several types of steel surface finishes for coils, including hot rolled, cold rolled, galvanized, and coated finishes. Each finish offers unique properties and characteristics, such as improved strength, corrosion resistance, or aesthetic appeal. The choice of finish depends on the specific application and desired outcome for the steel coils.

Q:Can steel coils be coated with anti-static materials?: Yes, steel coils can be coated with anti-static materials. These materials are specifically designed to reduce or eliminate static electricity buildup on the surface of the steel coils, which can be beneficial in various industrial applications where static discharge can cause damage or safety hazards.

Q:What are the different types of coil edge trimming machines?: In the market, one can find a variety of coil edge trimming machines. These machines are specifically designed for the purpose of trimming the edges of coils or rolls made from different materials like metal, paper, plastic, or fabric. Each machine type possesses unique features and capabilities to cater to specific trimming needs. 1. Manual Edge Trimmers: These machines require manual operation where an operator feeds the coil and trims the edges using a cutting tool or blade. Manual edge trimmers are suitable for trimming applications with low volumes and rely on the skill and precision of the operator. 2. Semi-automatic Edge Trimmers: These machines offer automated feeding mechanisms to assist in the coil feeding process. However, the operator still performs the trimming manually using a cutting tool. The feeding mechanism reduces manual effort and increases productivity. 3. Automatic Edge Trimmers: These fully automated machines require minimal operator intervention. Equipped with advanced sensors and controls, they ensure precise and consistent trimming of coil edges. Automatic edge trimmers can handle high volumes of coils and are often integrated into production lines for continuous trimming operations. 4. Rotary Blade Edge Trimmers: These machines utilize high-speed rotating blades to trim coil edges with precision. Commonly used for plastic or fabric coils, they provide clean and smooth cuts. 5. Guillotine Edge Trimmers: These machines employ a guillotine-like cutting mechanism to trim coil edges. The cutting blade moves vertically, resulting in straight and accurate cuts. Guillotine edge trimmers are suitable for trimming metal or paper coils. 6. Laser Edge Trimmers: These machines adopt laser technology to trim coil edges. The laser beam ensures clean and precise cuts, making them ideal for delicate or high-value materials. The choice of the appropriate coil edge trimming machine depends on the specific requirements of the application. Factors such as material type, coil dimensions, trimming precision, and production volume should be taken into consideration. Each machine type has its own advantages and limitations.

Q:aLSO, DOES STEEL C45 REFER TO THE CARBON IN IT?ALSO, WHAT IS AIRCRAFT GRADE PLYWOOD AND WHERE DOES ONE GET IT: chromium nickle steel aka stainless steel exact amount of chrome and nickle will determine type/grade numbers Check the google for steel type/grade Never head of aircraft grade, however,, there is marine grade - normally baltic birch with waterproof glue and no defects i.e. knots, etc. Very strong (also quite expensive) but worth it for the correct applications

Q:How do steel coils contribute to the transportation industry?: The versatility and durability of steel coils play a significant role in the transportation industry. These coiled steel sheets have various uses, such as manufacturing automobiles, shipping containers, and railway cars. In the automotive sector, steel coils are utilized to produce different components like body panels, chassis, and engine parts. Steel's strength and malleability make it an ideal material for ensuring vehicle safety and durability. Additionally, steel coils are employed in manufacturing shipping containers, which are crucial for global goods transportation. The sturdiness and resistance to corrosion provided by steel coils ensure the protection of goods during their journey. Moreover, steel coils are essential in the railway industry. They are used to manufacture railway cars, including freight cars and passenger coaches. Steel's strength and durability make it ideal for withstanding the heavy loads and harsh operating conditions experienced by railway vehicles. Steel coils also contribute to the construction of railroad tracks and bridges, providing the necessary strength and stability for safe and efficient transportation. In conclusion, steel coils are indispensable in the transportation industry. They offer the required strength, durability, and versatility for manufacturing various transportation vehicles and infrastructure. Their contribution ensures the safety, reliability, and efficiency of transportation systems, making them vital in the modern world.

Q:What is the shelf life of a steel coil?: The shelf life of a steel coil largely depends on various factors such as the type of steel, the storage conditions, and any protective measures taken. Generally, steel coils can have a shelf life ranging from a few months to several years. If the steel coil is properly stored in a controlled environment with suitable temperature, humidity, and ventilation, it can last for a longer period. Additionally, if the coil is coated with protective materials such as oil or anti-corrosion coatings, it can further extend its shelf life. However, if the steel coil is exposed to unfavorable storage conditions like high humidity, extreme temperatures, or corrosive substances, its shelf life can significantly decrease. Exposure to moisture and oxygen can lead to rust and corrosion, reducing the quality and structural integrity of the coil. To maximize the shelf life of a steel coil, it is essential to store it in a dry, well-ventilated area, away from direct sunlight and corrosive substances. Regular inspections and maintenance, including cleaning and re-application of protective coatings, can also help preserve the coil's quality. Ultimately, it is crucial to consult the manufacturer or supplier of the steel coil for specific shelf life recommendations as different types of steel may have varying durability and storage requirements.

Q:What are the common methods of testing the durability of steel coils?: Steel coils undergo various testing methods to assess their durability, strength, and resistance to different stresses and conditions. Some commonly used techniques include: 1. Tensile testing: This method measures the maximum stress a coil can bear before breaking or deforming by subjecting it to tension. It provides valuable insights into the strength and ductility of steel coils. 2. Bend testing: This method evaluates the flexibility and resistance to deformation of steel coils by bending them to a specific angle and checking for cracks or fractures. It is essential for assessing coil durability in industries like construction or automotive. 3. Impact testing: This method determines the ability of steel coils to withstand sudden shocks or impacts. It involves striking the coil with a heavy object and measuring energy absorption or deformation. Impact testing helps identify coil toughness and resistance to sudden loading conditions. 4. Corrosion testing: Steel coils often face corrosive environments like moisture or chemicals. Corrosion testing examines the resistance of steel to degradation caused by these agents. Salt spray or electrochemical testing simulates and evaluates coil durability in corrosive conditions. 5. Fatigue testing: This method assesses the ability of steel coils to endure repeated loading and unloading cycles. It subjects the coil to cyclic stresses until failure. Fatigue testing is crucial in machinery or infrastructure applications where coils experience repetitive loading. 6. Hardness testing: This method gauges the resistance of steel coils to indentation or scratching, providing information about their strength and wear resistance. Common hardness tests include Brinell, Rockwell, and Vickers methods. 7. Non-destructive testing: In addition to the destructive methods mentioned above, non-destructive techniques like ultrasonic testing, magnetic particle inspection, or X-ray testing are used to detect internal defects or flaws without damaging the coil. By utilizing these testing methods, manufacturers and industries can ensure that steel coils meet the required durability standards and perform reliably in their intended applications.

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